Provides a macro to check if a list of one or more header files can be included together.
CHECK_INCLUDE_FILES("<includes>" <variable> [LANGUAGE <language>])
Check if the given <includes> list may be included together in a source file and store the result in an internal cache entry named <variable>. Specify the <includes> argument as a ;-list of header file names.
If LANGUAGE is set, the specified compiler will be used to perform the check. Acceptable values are C and CXX. If not set, the C compiler will be used if enabled. If the C compiler is not enabled, the C++ compiler will be used if enabled.
The following variables may be set before calling this macro to modify the way the check is run:
See modules CheckIncludeFile and CheckIncludeFileCXX to check for a single header file in C or CXX languages.